A pregnancy test performed on the same date as a preventive service may be reported separately using the CPT code appropriate to the test (e.g., 81025, âUrine pregnancy test, by visual color comparison methodsâ) and a diagnosis code from the V72.4X series (pregnancy examination or test).
This process is called continental drift. The plates move because of convection currents in the Earth's mantle. These are driven by the heat produced by the decay of radioactive elements and heat left over from the formation of the Earth.
A: Earth's tectonic plates move due to the movement of magma in the mantle underneath the crust. Extreme temperatures inside the planet's core cause a convection cycle in which hot magma rises to the surface and eventually sinks back toward the core as it cools. Continue Reading.